EP0483398B1 - Capteur de position angulaire pour un moteur à courant continu - Google Patents
Capteur de position angulaire pour un moteur à courant continu Download PDFInfo
- Publication number
- EP0483398B1 EP0483398B1 EP90120779A EP90120779A EP0483398B1 EP 0483398 B1 EP0483398 B1 EP 0483398B1 EP 90120779 A EP90120779 A EP 90120779A EP 90120779 A EP90120779 A EP 90120779A EP 0483398 B1 EP0483398 B1 EP 0483398B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- switch
- position sensor
- current motor
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
Definitions
- the invention relates to a rotary position transmitter for a DC motor according to the preamble of claim 1; such a rotary position transmitter is, for. B. by the book: "Electrical measurement technology" by E. Schrüfer in C. Hanser Verlag, pages 309, 310 known.
- two incremental length and angle encoders with direction-dependent display are provided with two phase-shifting voltage-supplying photo detectors, the output voltages of which are converted into binary signals and processed in an evaluation device to give an analog rotary position indication, both via the adjustment angle and the adjustment direction of the rotor of the DC motor informed.
- a rotary position sensor of the type mentioned at the beginning which is less expensive and nevertheless reliable in relation to the rotary position sensor for a brushed DC motor is possible in that the evaluation device for rotating direction information is connected to a hysteresis rotary switch with a different binary signal corresponding to the polarity of the supply voltage of the direct current motor; according to the invention Adjustment path of the rotor is detected with a single incremental encoder, but the direction of rotation is derived from the voltage applied to the DC motor with a correspondingly different polarity, so that the direction of rotation information also in the event of a failure of the supplying motor voltage or in the neutral position of the connection of the DC motor to the supplying network Voltage switch remains available.
- the DC motor 1 of e.g. Motor vehicle servo drives for motorized seat adjustment can be connected to a motor vehicle electrical system P; N via a voltage switch 2 with a switch position I for one direction of rotation "FORWARD", a switch position III for the other direction of rotation "REVERSE” and a neutral position II.
- a magnetic wheel 1.1 rotates with the rotor shaft of the direct current motor 1 and generates 3.3 pulse sequences in a stator-side Hall sensor, the number of which can be used to infer the adjustment length or the adjustment angle of the rotor.
- a hysteresis switch 3.1 is also provided as part of the rotary position transmitter 3 and is connected to the voltage changeover switch 2 via a low-pass filter 3.2.
- a hysteresis switch 3.1 connected upstream according to one embodiment of the invention, in the simplest case according to FIG. 2 from a resistor R1 and a capacitor C existing low-pass filter R2 prevents switching errors by suppressing voltage peaks on the motor cable.
- the hysteresis switch 3.1 consists of an operational amplifier 3.11, to which the voltage divider resistors R4; R5 or R6; R7 defining its switching thresholds are supplied with its input voltage signals.
- the switching thresholds defined in this way lie between the minimum and maximum output voltage of the operational amplifier 3.11.
- FIG 3 shows in one exemplary embodiment the voltage present at input IN 'in FIG. 2 when the switching threshold is reached in position I of voltage changeover switch 2 in accordance with the one direction of rotation or in position III after switching the voltage switch 2 in the other direction of rotation of the DC motor 1.
- a voltage divider which is formed by R2, R3, determines the voltage at the hysteresis switch input IN 'when the voltage switch 2 is in neutral position II.
- R2, R3 are preferably selected so that this voltage brings the mean value of the two switching thresholds of the hysteresis switch 3.1 into a new switching state. If the voltage switch 2 is in switch position II, the output of the hysteresis switch does not change.
- the voltage switch 2 If the voltage switch 2 is placed in position I, the voltage at the hysteresis switch increases.
- the switching threshold I of the hysteresis switch 3.1 is now set so that the applied voltage is safely above the set switching threshold I (FIG. 3).
- the hysteresis switch therefore becomes the switching state (FIG.3).
- the voltage changeover switch 2 is reset to position II, the state of the hysteresis switch does not change since the voltage defined by the voltage divider R2, R3 is now at the hysteresis switch and this voltage lies between the switching thresholds I and II (FIG. 3) of the hysteresis Switch is located.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Claims (4)
- Capteur de position angulaire pour un moteur à courant continu (1), notamment un servomoteur pour véhicule automobile, comportant un transmetteur incrémental d'impulsions de déplacement (1.1; 3.3) et un dispositif d'évaluation (3.4), qui traite le signal de ce transmetteur, caractérisé par le fait que le moteur à courant continu (1) est raccordé par l'intermédiaire d'un interrupteur de tension (2), qui comporte au moins les positions de commutation "marche avant" ou "marche arrière" et "neutre", à une tension d'alimentation (réseau de bord P;N) et que le dispositif d'évaluation (3.4) servant à évaluer l'information du sens de rotation est raccordé à un interrupteur à hystérèse (3.1) par un signal binaire dont la polarité diffère de celle de la tension d'alimentation (réseau de bord P;N) du moteur à courant continu (1).
- Capteur de position angulaire suivant la revendication 1, caractérisé par le fait qu'un filtre passe-bas (3.2) est branché en amont de l'interrupteur à hystérèse (3.1).
- Capteur de position angulaire suivant la revendication 1 ou 2, caractérisé par un transmetteur incrémental d'impulsions de déplacement équipé d'un capteur de Hall (3.3) situé côté stator.
- Capteur de position angulaire suivant l'une des revendications 1 à 3, caractérisé par un interrupteur à hystérèse (3.1) comportant un amplificateur opérationnel (3.11) pourvu de seuils de commutation fixés par les résistances de division de tension (R6;R7 ou R4;R5) branchées en amont.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9090120779T DE59001051D1 (de) | 1990-10-30 | 1990-10-30 | Drehstellungsgeber fuer einen gleichstrommotor. |
EP90120779A EP0483398B1 (fr) | 1990-10-30 | 1990-10-30 | Capteur de position angulaire pour un moteur à courant continu |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP90120779A EP0483398B1 (fr) | 1990-10-30 | 1990-10-30 | Capteur de position angulaire pour un moteur à courant continu |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0483398A1 EP0483398A1 (fr) | 1992-05-06 |
EP0483398B1 true EP0483398B1 (fr) | 1993-03-17 |
Family
ID=8204666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90120779A Expired - Lifetime EP0483398B1 (fr) | 1990-10-30 | 1990-10-30 | Capteur de position angulaire pour un moteur à courant continu |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0483398B1 (fr) |
DE (1) | DE59001051D1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109194205A (zh) * | 2018-07-25 | 2019-01-11 | 中国航空工业集团公司西安飞行自动控制研究所 | 一种hall输入信号调理电路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3424247A1 (de) * | 1984-06-30 | 1986-01-09 | Teldix Gmbh, 6900 Heidelberg | Kollektorloser gleichstrommotor |
US4761578A (en) * | 1987-02-27 | 1988-08-02 | The Superior Electric Company | Method and means for operating brushless DC motor with reversible DC power |
-
1990
- 1990-10-30 EP EP90120779A patent/EP0483398B1/fr not_active Expired - Lifetime
- 1990-10-30 DE DE9090120779T patent/DE59001051D1/de not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109194205A (zh) * | 2018-07-25 | 2019-01-11 | 中国航空工业集团公司西安飞行自动控制研究所 | 一种hall输入信号调理电路 |
Also Published As
Publication number | Publication date |
---|---|
DE59001051D1 (de) | 1993-04-22 |
EP0483398A1 (fr) | 1992-05-06 |
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